// Render one model
void PolygonSortModelRenderer::RenderModel(int streamflags, CModel* model, void* data)
{
CModelDefPtr mdef = model->GetModelDef();
PSModel* psmdl = (PSModel*)data;
// Setup per-CModel arrays
u8* base = psmdl->m_Array.Bind();
GLsizei stride = (GLsizei)psmdl->m_Array.GetStride();
glVertexPointer(3, GL_FLOAT, stride, base + psmdl->m_Position.offset);
if (streamflags & STREAM_COLOR)
glColorPointer(3, psmdl->m_Color.type, stride, base + psmdl->m_Color.offset);
// render the lot
size_t numFaces = mdef->GetNumFaces();
if (!g_Renderer.m_SkipSubmit) {
pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdef->GetNumVertices()-1,
(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, psmdl->m_Indices);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_ModelTris += numFaces;
}
// Render one model
void ShaderModelRenderer::RenderModel(int streamflags, CModel* model, void* data)
{
CModelDefPtr mdldef = model->GetModelDef();
ShaderModel* shadermodel = (ShaderModel*)data;
u8* base = shadermodel->m_Array.Bind();
GLsizei stride = (GLsizei)shadermodel->m_Array.GetStride();
u8* indexBase = m->shadermodeldef->m_IndexArray.Bind();
if (streamflags & STREAM_POS)
glVertexPointer(3, GL_FLOAT, stride, base + shadermodel->m_Position.offset);
if (streamflags & STREAM_NORMAL)
glNormalPointer(GL_FLOAT, stride, base + shadermodel->m_Normal.offset);
if (streamflags & STREAM_UV0)
glTexCoordPointer(2, GL_FLOAT, stride, base + shadermodel->m_UV.offset);
// render the lot
size_t numFaces = mdldef->GetNumFaces();
if (!g_Renderer.m_SkipSubmit)
{
pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices()-1,
(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, indexBase);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_ModelTris += numFaces;
}
// Render one model
void InstancingModelRenderer::RenderModel(const CShaderProgramPtr& shader, int UNUSED(streamflags), CModel* model, CModelRData* UNUSED(data))
{
CModelDefPtr mdldef = model->GetModelDef();
if (m->gpuSkinning)
{
// Bind matrices for current animation state.
// Add 1 to NumBones because of the special 'root' bone.
// HACK: NVIDIA drivers return uniform name with "[0]", Intel Windows drivers without;
// try uploading both names since one of them should work, and this is easier than
// canonicalising the uniform names in CShaderProgramGLSL
shader->Uniform(str_skinBlendMatrices_0, mdldef->GetNumBones() + 1, model->GetAnimatedBoneMatrices());
shader->Uniform(str_skinBlendMatrices, mdldef->GetNumBones() + 1, model->GetAnimatedBoneMatrices());
}
// render the lot
size_t numFaces = mdldef->GetNumFaces();
if (!g_Renderer.m_SkipSubmit)
{
// Draw with DrawRangeElements where available, since it might be more efficient
#if CONFIG2_GLES
glDrawElements(GL_TRIANGLES, (GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->imodeldefIndexBase);
#else
pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)m->imodeldef->m_Array.GetNumVertices()-1,
(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->imodeldefIndexBase);
#endif
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_ModelTris += numFaces;
}
PSModel::PSModel(CModel* model)
: m_Model(model), m_Array(GL_DYNAMIC_DRAW)
{
CModelDefPtr mdef = m_Model->GetModelDef();
// Positions and normals must be 16-byte aligned for SSE writes.
// We can pack the color after the position; it will be corrupted by
// BuildPositionAndNormals, but that's okay since we'll recompute the
// colors afterwards.
m_Color.type = GL_UNSIGNED_BYTE;
m_Color.elems = 4;
m_Array.AddAttribute(&m_Color);
m_Position.type = GL_FLOAT;
m_Position.elems = 3;
m_Array.AddAttribute(&m_Position);
m_Array.SetNumVertices(mdef->GetNumVertices());
m_Array.Layout();
// Verify alignment
ENSURE(m_Position.offset % 16 == 0);
ENSURE(m_Array.GetStride() % 16 == 0);
m_Indices = new u16[mdef->GetNumFaces()*3];
}
ShaderModelDef::ShaderModelDef(const CModelDefPtr& mdef)
: m_IndexArray(GL_STATIC_DRAW)
{
m_IndexArray.SetNumVertices(mdef->GetNumFaces()*3);
m_IndexArray.Layout();
ModelRenderer::BuildIndices(mdef, m_IndexArray.GetIterator());
m_IndexArray.Upload();
m_IndexArray.FreeBackingStore();
}
// Build default indices array.
void ModelRenderer::BuildIndices(
const CModelDefPtr& mdef,
const VertexArrayIterator<u16>& Indices)
{
size_t idxidx = 0;
SModelFace* faces = mdef->GetFaces();
for (size_t j = 0; j < mdef->GetNumFaces(); ++j) {
SModelFace& face=faces[j];
Indices[idxidx++]=face.m_Verts[0];
Indices[idxidx++]=face.m_Verts[1];
Indices[idxidx++]=face.m_Verts[2];
}
}
// Render one model
void InstancingModelRenderer::RenderModel(CShaderProgramPtr& UNUSED(shader), int UNUSED(streamflags), CModel* model, void* UNUSED(data))
{
CModelDefPtr mdldef = model->GetModelDef();
// render the lot
size_t numFaces = mdldef->GetNumFaces();
if (!g_Renderer.m_SkipSubmit)
{
pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices()-1,
(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->imodeldefIndexBase);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_ModelTris += numFaces;
}
float PSModel::BackToFrontIndexSort(const CMatrix3D& worldToCam)
{
static std::vector<IntFloatPair> IndexSorter;
CModelDefPtr mdef = m_Model->GetModelDef();
size_t numFaces = mdef->GetNumFaces();
const SModelFace* faces = mdef->GetFaces();
if (IndexSorter.size() < numFaces)
IndexSorter.resize(numFaces);
VertexArrayIterator<CVector3D> Position = m_Position.GetIterator<CVector3D>();
CVector3D tmpvtx;
for(size_t i = 0; i < numFaces; ++i)
{
tmpvtx = Position[faces[i].m_Verts[0]];
tmpvtx += Position[faces[i].m_Verts[1]];
tmpvtx += Position[faces[i].m_Verts[2]];
tmpvtx *= 1.0f/3.0f;
tmpvtx = worldToCam.Transform(tmpvtx);
float distsqrd = SQR(tmpvtx.X)+SQR(tmpvtx.Y)+SQR(tmpvtx.Z);
IndexSorter[i].first = (int)i;
IndexSorter[i].second = distsqrd;
}
std::sort(IndexSorter.begin(),IndexSorter.begin()+numFaces,SortFacesByDist());
// now build index list
size_t idxidx = 0;
for (size_t i = 0; i < numFaces; ++i) {
const SModelFace& face = faces[IndexSorter[i].first];
m_Indices[idxidx++] = (u16)(face.m_Verts[0]);
m_Indices[idxidx++] = (u16)(face.m_Verts[1]);
m_Indices[idxidx++] = (u16)(face.m_Verts[2]);
}
return IndexSorter[0].second;
}
IModelDef::IModelDef(const CModelDefPtr& mdef)
: m_IndexArray(GL_STATIC_DRAW), m_Array(GL_STATIC_DRAW)
{
size_t numVertices = mdef->GetNumVertices();
m_Position.type = GL_FLOAT;
m_Position.elems = 3;
m_Array.AddAttribute(&m_Position);
m_Normal.type = GL_FLOAT;
m_Normal.elems = 3;
m_Array.AddAttribute(&m_Normal);
m_UV.type = GL_FLOAT;
m_UV.elems = 2;
m_Array.AddAttribute(&m_UV);
m_Array.SetNumVertices(numVertices);
m_Array.Layout();
VertexArrayIterator<CVector3D> Position = m_Position.GetIterator<CVector3D>();
VertexArrayIterator<CVector3D> Normal = m_Normal.GetIterator<CVector3D>();
VertexArrayIterator<float[2]> UVit = m_UV.GetIterator<float[2]>();
ModelRenderer::CopyPositionAndNormals(mdef, Position, Normal);
ModelRenderer::BuildUV(mdef, UVit);
m_Array.Upload();
m_Array.FreeBackingStore();
m_IndexArray.SetNumVertices(mdef->GetNumFaces()*3);
m_IndexArray.Layout();
ModelRenderer::BuildIndices(mdef, m_IndexArray.GetIterator());
m_IndexArray.Upload();
m_IndexArray.FreeBackingStore();
}
IModelDef::IModelDef(const CModelDefPtr& mdef, bool gpuSkinning, bool calculateTangents)
: m_IndexArray(GL_STATIC_DRAW), m_Array(GL_STATIC_DRAW)
{
size_t numVertices = mdef->GetNumVertices();
m_Position.type = GL_FLOAT;
m_Position.elems = 3;
m_Array.AddAttribute(&m_Position);
m_Normal.type = GL_FLOAT;
m_Normal.elems = 3;
m_Array.AddAttribute(&m_Normal);
m_UVs.resize(mdef->GetNumUVsPerVertex());
for (size_t i = 0; i < mdef->GetNumUVsPerVertex(); i++)
{
m_UVs[i].type = GL_FLOAT;
m_UVs[i].elems = 2;
m_Array.AddAttribute(&m_UVs[i]);
}
if (gpuSkinning)
{
m_BlendJoints.type = GL_UNSIGNED_BYTE;
m_BlendJoints.elems = 4;
m_Array.AddAttribute(&m_BlendJoints);
m_BlendWeights.type = GL_UNSIGNED_BYTE;
m_BlendWeights.elems = 4;
m_Array.AddAttribute(&m_BlendWeights);
}
if (calculateTangents)
{
// Generate tangents for the geometry:-
m_Tangent.type = GL_FLOAT;
m_Tangent.elems = 4;
m_Array.AddAttribute(&m_Tangent);
// floats per vertex; position + normal + tangent + UV*sets [+ GPUskinning]
int numVertexAttrs = 3 + 3 + 4 + 2 * mdef->GetNumUVsPerVertex();
if (gpuSkinning)
{
numVertexAttrs += 8;
}
// the tangent generation can increase the number of vertices temporarily
// so reserve a bit more memory to avoid reallocations in GenTangents (in most cases)
std::vector<float> newVertices;
newVertices.reserve(numVertexAttrs * numVertices * 2);
// Generate the tangents
ModelRenderer::GenTangents(mdef, newVertices, gpuSkinning);
// how many vertices do we have after generating tangents?
int newNumVert = newVertices.size() / numVertexAttrs;
std::vector<int> remapTable(newNumVert);
std::vector<float> vertexDataOut(newNumVert * numVertexAttrs);
// re-weld the mesh to remove duplicated vertices
int numVertices2 = WeldMesh(&remapTable[0], &vertexDataOut[0],
&newVertices[0], newNumVert, numVertexAttrs);
// Copy the model data to graphics memory:-
m_Array.SetNumVertices(numVertices2);
m_Array.Layout();
VertexArrayIterator<CVector3D> Position = m_Position.GetIterator<CVector3D>();
VertexArrayIterator<CVector3D> Normal = m_Normal.GetIterator<CVector3D>();
VertexArrayIterator<CVector4D> Tangent = m_Tangent.GetIterator<CVector4D>();
VertexArrayIterator<u8[4]> BlendJoints;
VertexArrayIterator<u8[4]> BlendWeights;
if (gpuSkinning)
{
BlendJoints = m_BlendJoints.GetIterator<u8[4]>();
BlendWeights = m_BlendWeights.GetIterator<u8[4]>();
}
// copy everything into the vertex array
for (int i = 0; i < numVertices2; i++)
{
int q = numVertexAttrs * i;
Position[i] = CVector3D(vertexDataOut[q + 0], vertexDataOut[q + 1], vertexDataOut[q + 2]);
q += 3;
Normal[i] = CVector3D(vertexDataOut[q + 0], vertexDataOut[q + 1], vertexDataOut[q + 2]);
q += 3;
Tangent[i] = CVector4D(vertexDataOut[q + 0], vertexDataOut[q + 1], vertexDataOut[q + 2],
vertexDataOut[q + 3]);
q += 4;
if (gpuSkinning)
{
for (size_t j = 0; j < 4; ++j)
{
BlendJoints[i][j] = (u8)vertexDataOut[q + 0 + 2 * j];
BlendWeights[i][j] = (u8)vertexDataOut[q + 1 + 2 * j];
}
q += 8;
}
for (size_t j = 0; j < mdef->GetNumUVsPerVertex(); j++)
{
VertexArrayIterator<float[2]> UVit = m_UVs[j].GetIterator<float[2]>();
UVit[i][0] = vertexDataOut[q + 0 + 2 * j];
UVit[i][1] = vertexDataOut[q + 1 + 2 * j];
}
}
// upload vertex data
m_Array.Upload();
m_Array.FreeBackingStore();
m_IndexArray.SetNumVertices(mdef->GetNumFaces() * 3);
m_IndexArray.Layout();
VertexArrayIterator<u16> Indices = m_IndexArray.GetIterator();
size_t idxidx = 0;
// reindex geometry and upload index
for (size_t j = 0; j < mdef->GetNumFaces(); ++j)
{
Indices[idxidx++] = remapTable[j * 3 + 0];
Indices[idxidx++] = remapTable[j * 3 + 1];
Indices[idxidx++] = remapTable[j * 3 + 2];
}
m_IndexArray.Upload();
m_IndexArray.FreeBackingStore();
}
else
{
// Upload model without calculating tangents:-
m_Array.SetNumVertices(numVertices);
m_Array.Layout();
VertexArrayIterator<CVector3D> Position = m_Position.GetIterator<CVector3D>();
VertexArrayIterator<CVector3D> Normal = m_Normal.GetIterator<CVector3D>();
ModelRenderer::CopyPositionAndNormals(mdef, Position, Normal);
for (size_t i = 0; i < mdef->GetNumUVsPerVertex(); i++)
{
VertexArrayIterator<float[2]> UVit = m_UVs[i].GetIterator<float[2]>();
ModelRenderer::BuildUV(mdef, UVit, i);
}
if (gpuSkinning)
{
VertexArrayIterator<u8[4]> BlendJoints = m_BlendJoints.GetIterator<u8[4]>();
VertexArrayIterator<u8[4]> BlendWeights = m_BlendWeights.GetIterator<u8[4]>();
for (size_t i = 0; i < numVertices; ++i)
{
const SModelVertex& vtx = mdef->GetVertices()[i];
for (size_t j = 0; j < 4; ++j)
{
BlendJoints[i][j] = vtx.m_Blend.m_Bone[j];
BlendWeights[i][j] = (u8)(255.f * vtx.m_Blend.m_Weight[j]);
}
}
}
m_Array.Upload();
m_Array.FreeBackingStore();
m_IndexArray.SetNumVertices(mdef->GetNumFaces()*3);
m_IndexArray.Layout();
ModelRenderer::BuildIndices(mdef, m_IndexArray.GetIterator());
m_IndexArray.Upload();
m_IndexArray.FreeBackingStore();
}
}